Humans learn new information by comparing it to old information. For example, if I look at an odd chair at Ikea, how to I know it’s an odd chair (besides the fact that Ikea made it)? My brain automatically compares it to all the chairs I’ve seen in all the years I’ve been alive. When I tried bear meat for the first time I thought to myself, “It tastes like steak.” My brain immediately thought of what I already know about meat tastes and compared the new meat to that.
This method of learning usually works well for us. But when we become true Christians and begin to learn the gospel of the Kingdom, we can’t add this new information to what we already know. What we know will conflict and pollute the pure, new paradigm being offered to us by God. Instead we must become blank slates, like babies:
John 3:3 Jesus replied, “I tell you the truth, unless you are born again, you cannot see the Kingdom of God.”
Matthew 18:3, “Then he said, ‘I tell you the truth, unless you turn from your sins and become like little children, you will never get into the Kingdom of Heaven.'”